Natural recovery assessment of some physical properties of forest soil compacted by ground base skidding

Abstract

Skidding machinery traffic can have a long-term detrimental impact on soil physical properties such as bulk density and strenght. Therefore, the trial was conducted to investigate the recovery status of soil physical properties, compacted during twenty-year period at Asalem Forest, north of Iran. For this purpose, three parcels of the first and the second districts of Nave Asalam Forest, were chosen. The treatments consisted of three periods after skidding (1, 10 and 20 years), two slope classes (>20% an